Antiglare means



June 15 1926. l,588,816

H. W. SISSON ANTI GLARE MEANS Filed NOV. 9, 1925 glare means there gegenteil June 15, 1926.

UNITED STATES -PATaN'r oFFicE.

Application Med November This invention relates to an antilare means particularly for automobile ead lights and the like, and its objects are the provision of a generally improved, simplified and inexpensive means that will screen the direct rays or beams of light from ap roaching vehicles or the eye without cho ing or interfering with the rays which do not glare or dazzle and to direct the screened rays out into the field of illuminatin rays to increase the intensity and field o driving illnmination ahead. v

The invention is fillustrated in the accompanying drawings, in which- Figure 1 is afcentral longitudinal section through a headlight embodying the invention;

Figure 2 is an elevational view of the innerer rear side of the lens of the llam illustrated in Fi ure 1 showing the antlhind;

Figure 3 is a fragmentary diametrical section through the lensof Figure 2; and

Figure 4 isv a sectional view similar to Figure 3 of a modication.

The headlight shown is designated generally at 5. It ma be of any suitable or preferred type'. T e details `of the lamp per se, forms no part of the present inventlon and the disposition, sha e and formation of the anti-glare means o the resent inventionl ay be varied to secure t e best results with e particular lam in question. With a regular parabolic re ector and the lamp mounted in the focus thereof the anti-glare means may be disposed substantially centrally but this` will vary with different reflectors, lamp dispositions and with different styles of lamps.

Suffice it to say that the particular head light shown comprises a shell or casing 6, the inner concave surface -7 of which may be polished or finished to provide a reflector and the incandescent or electric light bulb 10 is suitably mounted in the usual or any suitable manner, usually in the focus of the reflector 7. The bulb 10 is provided with a suitable connector 12 and of course the shell and refiector may be separate or' independent instead of the inside of the shell constituting the reflector, as shown. At the front the device is provided with the usual or any suitable lens 14 through which the direct and reflected rays are directed ahead. The anti-glare means comprise a member 20 of pointed or subulate configuration diss, 192s. smal No. 87,730.

posed in front ofthe lamp'10 to screen the same from the direct vision'of approaching drlvers. The member 20 may be ofsolid or hollow formation and it may be formed intefrral with the lens 14 or se arately and otherwise suitably disposed and) mounted in front of the lamp 10.

In Figures 1, 2 and 3, the member 20 is I shown of solid conical formation, but as already pointed ont, it may be hollow and the formation may be p ramidal, semi- Bpherical or of any other sultable pointed or subulate form havin a base and diminishing therefrom. In'igures 1, 2 and 3, the base 21 of the member 20 is formed integral with the lens 14, whereas in Figure 4, the hollow member 20 is entirely separate or independent of the lens 14. Where a separate member 20 is employed, it may be cemented to the lens 14 or otherwise suitably mounted or positioned in front of the light 10.

The member 20 may be made u clear or ground, metal, wood, fi re paper, 'or any other suitable material or combination of materials. It is preferably opaque, semi-opaque or translucent to screen the direct rays from the approaching drivers field of vision and it may be covered or otherwise finished.

In operation, the base 21 of the member 20 or 20', as the case may be, screens the light from the direct vision of approaching drivers, thereb screening the direct rays 24 which would, otherwise be projected into the eyes of the approaching drivers from the approaching drivers field of vision. The tapered or diminishing end 25 is shown as being disposed adjacent the light and of glass,

centrally with respect thereto and its diminishing formation permits the direct rays 26 which are dispersed sufficiently that they will not strike the eyes of the approaching driver to continue on out and join the re-` fiected rays 28 in illuminating the course ahead of the automobile. The tapering surface 25 of the member 20 or 20 may be polished or finished as shown at 30 in Figure 4 to provide a more effective reflector `for assuring reflection of the screened-out direct rays 24 out at 32 into the eld of driving illumination.

I have constructed and used the invention as thus described and find that the results are a total absence of glaring and dazzling rays upon approaching drivers and because of non-interference with such direct rays as do not strike the eyes of the approaching driver and reflection of the screened rays out into'the field of the other direct and re ected rays, the intensity and field of drivcar and also `to light up road signs, house numbers and the like which is a distinct advantage in night driving with the desirability of following the edge of road and road signs, and at the same time providing adequate driving illumination ahead without glaring or blinding approaching drivers.

1. In a headlight having a source of light therein, the combination of a lens comprising a transparent disc having a solid transparent anti-glare member rovided with a base formed integral witi the lens substantially on the axis thereof, said base being directed outwardly away from the light and said member tapering to a point toward the light and disposed wholly within the headlight to -screen and deflect the axial rays.

2. In a headlight having a source of light therein, the combination of a glass lens having a solid glass cone with its base formed integral with the lens and disposed substantially on the axis thereof, said base being directed outwardly away from the light and said cone tapering toward the light with its apex adjacent the light to screen and deflect the axial direct rays.

In witness whereof, I hereunto subscribe my name this 5th day of November, 1925.

HARRY W. SISSON. 

